Windshield regulator



Bec, 27, 1927. 1,653,977

T. P. ARcHEFe ET AL l WINDSHIELD REGULATOR Filed July 29. 1925 2 Sheets-Sheet l Dec. 27, 1927.

T. P. ARCHER ET AL 'NINDSHIELD REGULTDR Filed July 29, 1925 2 Shts-Shee't 2 Patented Dec. 27, 1927.

UNITED STATES PATENT orifice.

THOMAS P. ARCHER AND FRANK M. EDGAR, OF DETROIT, MICHIGAN, ASSIGNORS T0 TERNSTEDT MANUFACTURING COMPANY, 0F DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

WINDSHIELD REGULATOR.

Application filed July 29, 1925. Serial No. 46,828.

This invention relates to Windshield regulaters in the so-called Fisher V-V Windshield, which is a single panel7 up and down sliding Windshield controlled by a Window regulator, certain diiiiculties have been met With in the breaking' of the Window regulators.

This condition has been due to the tact that a Windshield panel is a relatively heavy panel and it requires a regulator which has relatively great mechanical advantage for raising and lowering. The result has been that Where the operator continued to exert eiiort on the operatingl handle after the r shield is stepped, either at the top or bott-om,

it very often stripped a gear. For instance the ratio ot mechanical advantage is son1ething like to l. 100# effort on the handle is translated into 700# on the shield and on the last operating gear. It Will be evident that under these conditions it has been very easy to strip a gear or break some ot the other parts. It is the object ot the present invention to overcome this difficulty.

To that end a suitable stop mechanism is afforded which resists the operating eiiiort before this has been multiplied by the mechanical advantage referred to.

ln the drawings:

Fig. 1 is a cross section, fragmentary in character, through the top of a closed body, looking at the inside ofi the header and shoW- ing' in dotted lines the Window regulator installation.

Fig. 2 is a section on the line 2 2 of Fig. l.

Fig. 3 is an elevation of the improved window regulator.

Fig. 4i is a fragmentary elevation of the same, showing how the stops engage.

a designates the roof of a closed ear, Z) the inside header board, and o the Windshield. 'in Fig. 1 the several opera-ting;r parts ot the windshield regulator are shown in dotted lines. In Fig. 3 these parts are shown in elevation. Brieiiy, these are the supporting' plates d and e connected by the spacing,r strap f. A driving pinion g is operated by a han die 7L through the interposition of a clutch, the details ot which are not shown here, but 50 Which are indicated in a` general Way at i in Fig. 2. This clutch in the usual Wav serves to loelr the Windshield at any given position. This pinion g meshes with the in termediate gear el', to which is fastened an- 55 other pinion y', which meshes with the :final driven lnear i. To this is attached a crank arm m having a crank pin n arranged to engage a loop secured to the top oi the shield to raise and lower the shield.

Similarly a -gear 0,y a crank arm p and a crank pin g on the opposite end of the regulator lifts the opposite end of the Windshield, the ei'ijort being4 transmitted trom the driven Lrear it to the driven gear 0 by means of a sliding rack r and a pinion e.

This much of the construction is old and is claimed in previous applications. However, the nniltiplication ol eilortby leverage is considerable. The purpose et the present invention to stop this turningJ effort on the handle at the appointed time before the same has been multiplied by the `rear ratios. This is accomplished in aV very simple and efficient manner by providing a disc il' attached to the driving' pinion g and which is provided with a stop projection u. On the intern'iediate gear stamped out a stop fw.

Now this disc and the position of the stop on the intermediate gear are ot such size and in such position that they are calculated to collide or meet only once, sav in five or six rotations, Whatever is necessary to ,Tet the correct travel tor the Windshield. This, of course, may be easily varied by changing the diameter of the disc and the radial distance of the stop trom the center of the discy and the radial` distance of the stop `from the een ter of the intermediate gear. The point is that atdeiinite and determined points in the turning ot the lnears, Jthe tivo stops meet and stop the train of gears. This stop is effective on the driving pinion without any multiplication ot the eiiort.

That We claim is:

ln a Window regulator, the combination oi means for raising and lowering the window,

a plurality of gears, and a pair of shoulders connected with said gears and arranged to collide after a. definite number of rotations of one gear anda different number of rotations of the other gear, thereby stopping operating effort before the same has reached its maximum condition.

In testimony whereof We have aixed our signatures.

THOMAS P. ARCHER. FRANK M. EDGAR. 

